oop
interjectionUK /uːp/
US /uːp/
A little word you say when you make a small mistake.
Oop, I dropped my pencil!
OTHER MEANINGS
2. A quick sound people make when they bump into something.
Oop! Sorry, I didn't see you there.
3. A short way to show you almost fell or tripped.
Oop, careful on that step!
4. A word used when you forget something small.
Oop, I left my lunch at home.